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TCP sequence number in case of Dummy packet

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Hi Guys,

I know 1 new sequence number is consumed consumed for  SYN, FIN or 1 byte of Data (means for 100 Byte 100 sequence number will be used).

But sometimes TCP sends Dummy packet for example when receivers window size is zero sender keeps polling receiver about it's window size (it is also know as Silly window Syndrome problem). So in  such kind of cases does new sequence number is used for every dummy packet ?
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